<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <meta charset="UTF-8">
    <title>welcome</title>
</head>
<body>
    <h1 align="center">欢迎来到选课系统</h1>
    <form method="post">
        <a href="/register">注册</a>
        <a href="/login">登录</a>
    </form>
</body>
</html>